Yes you can exit the alliance, the alliance will remain without members. There will be an alliance page at the capitol where you can see alliances available to join and stats.
Yes alliances will be bound to one of the lands and they will get land specific bonuses. Land bonuses can affect things like regeneration time , or max number of action points or other more critical stats values. All alliances in a land share same land influences.
There will be WARS ..wars are short periods of time when the regeneration counter goes at 1min/regeneration so that a huge number of fights can happen very quick. When other lands will open, the alliances will be divided on them and the taret will be to fight the other lands. A counting system will be added to count score points between lands. Alliance members wont be able to fight eachother. No diplomatioc relation will exist between alliances bound to same land except during war time when you will be able to attack only enemy alliances. Benefits from attacking other alliances are not defined yet.
Alliance bonuses can cover all profile settings a player can have, except principle points, so you can has as a bonus a lot of things from basic stats like you do now to more advanced stats later. I am planning to change bonuses based on alliance name to make each alliance have tis own benefits different from the others.
Player without alliances will not benefit from the extra bonuses but they will also be immune during war time and will not take part to the total land fight score. Alliance affiliation will be sort of a must to advance to next levels of the game.
There will be a limited number of alliances in this game. now its the time to create them. Later on only under special conditions you will be able to submit a new alliance request...such as 500 honor or more.
Alliance seats will increase. it is possible to divide alliance types in two categories, clans and war alliances, clans will have only name and will be created by any player with the required amount of honor points and war alliances will be fixed. clans can upgrade to war alliances under certain conditions. this is just theory for now, it will depend on how things evolve in alpha 4